After force shutdown keyboard, mouse USB touchpad are not working

As mentioned above windows XP is running but keyboard, mouse USB touchpad are not working after force shutdown. So, can I have possible solutions? Is clearing CMOS is the possible solution for it? if yes, how I can clear CMOS in Acer aspire 5100 laptop?

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Depending on your laptop settings start by doing a FULL shutdown. After rebooting hopefully the mouse (assume you mean a touchpad) will be restored; and maybe the keys not working. If unsuccessful connect a USB mouse and USB keyboard and check settings of the touchpad and also select the default language keyboard. If still unsuccessful try reinstalling touchpad drivers. Consider a possibility of some problem or damage to the keypad and/or touchpad if this all happened recently and the above doesn't correct.

1) try to RESTORE to some point where the computer was working.2) Update the BIOS +CHIPSET and RUN it.2a) see if working. If NOT working go the step #3 3) update the USB driver from the supplier company.4) updae the driver for keyboard +mouse , uninstall and reinstall.God bless you

I'll assume your touchpad and built-in mouse are not working, hence your need for the USB mouse. If the touch pad and built-in mouse are working but you find them awkward to use (another reason some users connect USB mice to notebooks), then you might find it easier to briefly persevere and use the touchpad and built-in mouse for only a few seconds just to complete the simple steps outlined below. If not, the keyboard method detailed below is less efficient and more cumbersome but equally effective.This driver that is being requested is already built-in to Windows. Use the TAB and down or up arrows keys on your keyboard to move the cursor to the button you want to activate -> press the ENTER key to activate the button that the cursor has settled on keys on your Click Next -> No (to alternative search methods) -> search the whole computer for the driver -> next -> finish -> if your USB mouse does not work straight away, press the windows logo key bottom left of your keyboard -> the use the keyboard arrow keys to move once up and then left to the shutdown button -> press ENTER -> use the arrow keys to move the cursor to RESTART -> press ENTER.